title: Osteoid-producing orbital ethmoid tumor.
abstract: Fibro-osseus lesions of the paranasal sinuses, especially those that contain multinucleated giant cells, demonstrate a significant histopathologic overlap although they manifest themselves throughout a wide range of clinical behavior. They routinely require a critical clinical and pathologic interpretation. Often, the clinical course of the disease is the only guide to diagnosis and mode of treatment. This study presents the case of a 4-year-old boy with an osteoid-producing tumor of the ethmoid sinus. Despite an original diagnosis of fibrous dysplasia, the lesion followed a relentless course. Eventually, maxillectomy, orbital exenteration, and craniotomy were required to control the disease. The literature of fibro-osseous lesions of the paranasal sinuses is reviewed and an attempt is made to classify these lesions according to their clinical behavior.
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D005005:Ethmoid Sinus; D005350:Fibroma / Q000473:pathology; D005357:Fibrous Dysplasia of Bone / Q000473:pathology; D005870:Giant Cell Tumors / Q000473:pathology; D006801:Humans; D008297:Male; D009918:Orbital Neoplasms / Q000473:pathology* / Q000556:secondary; D010017:Osteoma, Osteoid / Q000473:pathology*; D010255:Paranasal Sinus Neoplasms / Q000473:pathology*